The WHOIS information of a domain name is a collection of a variety of details which are openly accessed through specific lookup websites or a command line. The protocol that makes this possible carries the same name and you may effortlessly see the company where an Internet domain has been registered, the creation, expiration and last update dates as well as the names, postal and e-mail address of the people listed as Registrant (owner), Administrative, Technical and Billing contacts for a specific domain address. This information must be legitimate and up-to-date at all times; if not the domain registration may be challenged. The latter is a policy of ICANN (the Internet Corporation for Assigned Names and Numbers), therefore you should always ensure that the WHOIS details of your domain addresses are legitimate. Updating the WHOIS for a variety of country-code TLDs is limited, so whenever you register a new Internet domain, you should double-check the info you are submitting.